Resynchronizer for disk talking machines



Jul 22, 1930; L, B.VSMITH 1,771,274

RESYNCHRONIZER FOR DISK TALK ING MACHINES Filed Oct. 10, 1929 Patented July 22, 1930 v UNITED STA ES-- I (1mm LONZO i3. smrrn, or nrcuwoo'n, wus'r vmemra nnsimonnourznn roe. DISK TALKING MACHINES Application filed October 10, 1929. Serial No. 398,6'61.

My invention relates to improvements in re-synchronizers for disktalking machines,

and refers particularly to a mechanism for use in the production of'soun'd pictures and in conjunction with a projectingmachine and suitable amplifier, the projecting machine film to insure the most perfect synchrony of .the sound and hich can be instantly moved to the left when und is ahead of the pic ture or to the r'ignt when sound is back or behind the picture, and which in the event of the record slipping on the turn table, or a section being absent from the film, can be readily and quickly moved to effect the desired re-syno'hronizing to insure perfect transmlssion of. the sound and in reglster or synchrony with thefilm. f

Another objectof my invention is the provision of a mechanism which will operate in perfect register or synchrony with the travel ofthe film to insure the most satisfactory results and which can be'quickly adjusted to insure re-synchronizing when necessary and which mechanism Wlll lnsure a smooth and even transmission of the sound from the record to and throughthe amplifier to produce practical results.

vision of a mechanism of the character and for the purpose stated'whichwill he of simbodying novel features'of' construction and combination of parts substantia'llyas described and claimed and as shown in the accompanying drawing, in which:

Figure 1 represents a vertical sectional view of the complete mechanism constructed in ac-,

, a v thetravel of the Another. object of my invention is the pro- Figure 2 represents a top plan mechanism with the turn. table removed to machine.

Figure 4 represents a topplaliivievi of the other or lower insulating ring ormember of my invention.

Figure 5 represents a plan view and edge view of spring washer used for friction action.

in regulating pressure on the hubof the hand wheel. c a Figure 6 represents a section'taken on line 6-6 of Figure 3, showing the form of the upperinsulating ring, and y i Figure 7 represents a section on line 77 of Figure 7 showing the form of the lower: insulating ring.

Referring by numeral to the drawing in which similar numerals are used to denote the same parts in all the views:

The numerall designates the main casing or support which could be a part of the gear box and which is formed with the stud or boss 2, provided with an opening 3, in which is guided and adapted to rotate the shaft 4, upon which is mounted the turn table 5, which carries the record and which turn table rotates in re ister or synchrony with film, and resting upon the shoulder 6, at the base vof the boss is the flat insulating ring 7, which has arranged thereon the pair of flat copper or metal split rings Sand 8, from which lead the wires 9 and 9,

to the amplifier, which forms no part of my invention and is not shown. I

, Upon the said ring is mounted the upper insulating ring 10, which is formed with the pair of annular grooves or channels 11 and 11, tofit upon and verysnugly cover the pair of split rings 8 and 8", and said upper insu- .lated ring 10, is formed with openings12 and 12, which lead to the metal rings 8 and 8'. and which openings admit the brushes 13 and 13, to bear upon said split rings 8 and 8, for forming current conducting means as will presently appear.

50 cordance with and embodying my invention.' Fitting-upon the restingfiat on the upper insulating rin is the hub 14:, connected by spokes 15, wit the rim 16, all forming the hand wheel which thus is mounted upon and permitted to turn on the boss 2, of the main casting or support, and on the upper flat from turning but allows the hub'of the hand spring ring 20, which is properly confined by j the cap ring 21, threaded at 22, to engage the wheel to turn when necessary by'manual operation, and on said 'washerrests-the waved threads 23, on the boss 2, and which ring is retained in proper adjustment by the set screw 24, and which thus acts upon the friction spring ring to retain it in place and also to v allow the. manual I turning of the hand wheel when desired. V

- -From the hub of thehandwheel leads the arm 25, which is also connected at 26, with the rim of the, hand wheel and carries the and 13-, are the electric conduct wires 30,

vertical mounting 27, for the rod 28, to which is pivotally connected the pick up or trans-"- mitter 29, and leading from-the mounting 27, and through the arm 25,-to the brushesl3 which carry the soundfrom the pick up, through the-split rings and to the amplifier, as will be readily understood. 1

The operation of my invention will be readily: understood 'by ad conversant with] structures of this character from the. drawings and description, and it will be apparent that the sound passes from the record on the turn table, through the pick up-and through the conducting wires .to the amplifier in a smooth and even manner and in perfect register-or synchrony with the travel of the film,

and when .the'sound is producedahead of the picture the turning of the hand wheel to the left brings the pick up in roper place, and

also turning the hand w eel to the right brings the sound from behind or after to the picture into proper register or synchrony, and if a section of the film is absent or defective, the .hand' wheel can be properly moved to place the pick up in the desired groove of the record, and thus themechanism' is under manual operation and control at all times to permit the instant synchronizing of the sound on the record with the pictures on the film.

It will be apparent that my invention possesses'every feature of merit to commend it tinuous, and that generally that I reserve the right to make any changes or modifications which fallwithin the scope of the claims of this application.

I claim: a

1. In a mechanism of the character and for the purpose described, the combination with 'a record carrying turn table capable of rotation in one-direction, of 'a transmitter or pick up, and a mounting for said pick up capable of manual turning to the right or left with reference .to the movement of the said record carrying table said mounting comprising a handwheel, an arm carried by said hand wheel and upon which the pick up is pivoted.

2. In a mechanism of the character and for the purpose described, the combination with a record carrying turntable, a hand wheel adapted to be turned to the right or left with'reference to the rotation of said withja record carrying turn table,'. a, hand I wheel having its hub fittedaround the shaft ;of said turn table, an arm leading from said hub, a'pick up mounting connected with said arm, a pick up, a pair of insulating rings upon which the hub of the hand wheel rests, a pair of metal split rings -confined between said insulating rings, a pair of brushes passing through the upper of said insulating rings and bearing upon said split metal rings, and wires leading; from said brushes to the mounting of said pick up.

4. In a mechanism ofv the character and for the; purpose described the combination of a support formed with a boss, a shaft passing through said boss, a record carrying t'u'rn table on said shaft, a pair of insulating rings fitting upon said boss and resting on said support, a pair of split metal rings confined between said insulating rings, wiresleading from said rings to an amplifier,.a pair of brushes passing through one of said insulating rings and forming contact with saidsplit metal rings, a hand wheel having a hub fitting. around said boss and resting on said insulating rings, a cap ring on said boss, friction washers between the cap plate, and hub of said hand wheel, an arm extending from said hub to the rim of said hand wheel, a pick up mount supported by said arm, a pick up, and wires leading from said pick up mounting to said brushes.

In testimony whereof I afiix my signature.

' LONZO B. SMITH. 

